A pre-expansion internally threaded shell is set flush in concrete with a setting punch, leaving a machine thread for bolts or rod — ideal for soffit, overhead, and removable fixings.
Conforms to

Flush internal-thread shell set with a setting tool.
A cross-section of stocked configurations. Not exhaustive — diameters, lengths, grades, and finishes extend across the full range on request.
Representative specifications — not exhaustive · NXB-DRP
Match the line to the load, the environment, and the standard it answers to.
Materials
Finishes
Standards
Typical applications
Served industries
Mating parts and adjacent lines engineers reach for alongside this one.
Expansion clip wedges into concrete for high pull-out.
M6–M24 · 1/4"–1"
Expanding sleeve grips brick, block, and concrete.
M6–M16 · 1/4"–3/4"
General-purpose masonry fixing across substrates.
Ø5–Ø16 mm · 3/16"–5/8"
Continuously threaded studding cut to any length.
M6–M36 · 1/4"–1-1/2"
Grade, material, finish, and standard — matched to your joint and quoted from stock. Tell us the load case and we’ll confirm the line.